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近海顺岸桩基码头水流变化及泥沙淤积计算研究(张磊)

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&VK%t-dO-f |/b0近海顺岸桩基码头水流变化及泥沙淤积计算研究水利论文KI PDt)V

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【作者】张磊 【导师】徐啸
G4o;l(i7n7['h6m"T0【作者基本信息】南京水利科学研究院,港口、海岸及近海工程,2005年,硕士

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【中文摘要】 随着近海及海岸工程的发展,桩基码头建设后码头前后沿附近泥沙淤积问题相当严重,也引起学者研究的兴趣。本文总结了在桩基码头水流变化和泥沙淤积计算方面的相关研究成果。在此基础上,通过物理模型试验的研究方法,从水流变化的角度出发,对顺岸桩基码头桩群引起的水流变化幅度和范围,不同码头长度引起的流速改变进行了研究;探讨了桩基码头在潮汐往复流作用下的水流变化规律。并对桩基码头水流减少导致的泥沙淤积计算进行了探讨,从桩基码头水流减少引起泥沙淤积时间变长的角度出发提出了计算非开挖港池航道泥沙淤积量的表达式。

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3Px M U M7l/_)b0【英文摘要】 With the development of coastal and offshore engineering , there is a serious sediment deposition in the neighborhood of fore and aft of alongshore pile wharf. The problems are paid more and more attention . So correlation production of variety of flow velocity and calculating the siltation volume alongshore pile wharf is summarized. Based the production , a physical model is built and making use of the physical model , to research the extent and range of variety of flow velocity of pile group in the pile wharf . the rules of tide alternating current is educed . at the same time , the estimate of sediment deposition that pile wharf was built is discussed . Analysis results show that main factor of sediment deposition is the increase of siltation time because of the decrease of flow velocity in the pile wharf caused by pile resistance effect. At last , a formula is elicited to calculate the siltation volume.

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V-{q:^WEv$rL0【中文关键词】 顺岸桩基码头; 桩群; 阻水作用; 沉积时间; 泥沙淤积
!p:p,o-]j0【英文关键词】 alongshore pile wharf; pile group; resistance effect; siltation time; sediment deposition
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TAG: 泥沙 水流 张磊 近海 桩基码头
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